diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
new file mode 100644
index 00000000..b3428d0d
--- /dev/null
+++ b/.github/workflows/ci.yaml
@@ -0,0 +1,18 @@
+name: CI
+
+on:
+  pull_request:
+  push:
+
+jobs:
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Lint chatmaild
+        working-directory: chatmaild
+        run: pipx run tox
+      - name: Lint deploy-chatmail
+        working-directory: deploy-chatmail
+        run: pipx run tox
diff --git a/deploy-chatmail/src/deploy_chatmail/acmetool/__init__.py b/deploy-chatmail/src/deploy_chatmail/acmetool/__init__.py
index 84a43d81..a7cca8e2 100644
--- a/deploy-chatmail/src/deploy_chatmail/acmetool/__init__.py
+++ b/deploy-chatmail/src/deploy_chatmail/acmetool/__init__.py
@@ -1,6 +1,6 @@
 import importlib.resources
 
-from pyinfra.operations import apt, files, systemd, server
+from pyinfra.operations import apt, files, server
 
 
 def deploy_acmetool(nginx_hook=False, email="", domains=[]):